Mark P. Leone

Susan E. Mayer

Children from poor families generally do a lot worse than children from affluent families. They are more likely to develop behavior problems, to score lower on standardized tests, and to become adults in need of public assistance. Susan Mayer asks whether income directly affects children's life chances, as many experts believe, or if the factors that cause parents to have low incomes also impede their children's life chances. She explores the question of causation with remarkable ingenuity. First, she compares the value of income from different sources to determine, for instance, if a dollar from welfare is as valuable as a dollar from wages. She then investigates whether parents' income after an event, such as teenage childbearing, can predict that event. If it can, this suggests that income is a proxy for unmeasured characteristics that affect both income and the event. Next she compares children living in states that pay high welfare benefits with children living in states with low benefits. Finally, she examines whether national income trends have the expected impact on children. Regardless of the research technique, the author finds that the effect of income on children's outcomes is smaller than many experts have thought. Mayer then shows that the things families purchase as their income increases, such as cars and restaurant meals, seldom help children succeed. On the other hand, many of the things that do benefit children, such as books and educational outings, cost so little that their consumption depends on taste rather than income. Money alone, Mayer concludes, does not buy either the material or the psychological well-being that children require to succeed.

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